The widespread impression that recent philosophy of science has pioneered exploration of the “social dimensions of scientific knowledge‘ is shown to be in error, partly due to a lack of appreciation of historical precedent, and partly due to a misunderstanding of how the social sciences and philosophy have been intertwined over the last century. This paper argues that the referents of “democracy‘ are an important key in the American context, and that orthodoxies in the philosophy of science tend to be molded by the actual regimes of science organization within which they are embedded. These theses are illustrated by consideration of three representative philosophers of science: John Dewey, Hans Reichenbach, and Philip Kitcher. [Copyright &y& Elsevier]